Carrion Crown

Paizo Adventure Path of the Same Name.

Cursed and haunted, Ustalav rests upon the bones of the
foul empire of the legendary Lich-Archmage known
as the Whispering Tyrant. In the centuries since the
undead conqueror’s defeat, the land has been resettled, but
superstition and horror still lurk in the country’s shadows.
The greatest evil sleeps in the ruin of Gallowspire.
There, below the former court of the necromancer-king,
lies the undying remains of the Whispering Tyrant himself,
locked away by the magic of heroes and deities. Although
bound within his prison-tomb, the Lich-Lord’s dreams still
seep into the land, tainting minds and inspiring fanatics
like the necromancer cult known as the Whispering Way.